Power head for operating piston rods of pumps



Oct. 16,1923. 1,470,634 P. A. MYERS 7 POWER HEAD FOR OPERATING PISTON RODS OF PUMPS Filed Oct. 12. 1921 3 Sheets-Sheet 1 P. A. MYERS Oct 16, 1923.

POWER- HEAD 'FOR OPERATING PISTON RODS 0F PUMPS Filed Oct. '12 L921 3 Sheets-Sheet 3 attorney s,

Get 16, 1923. P. A MYERS POWER HEAD FOR OPERATING PISTON RODS OF PUMPS Filed Oct. 12. 1921 3 Sheets-Sheet 5 Zvwewfoz attorney 3,

Patented Oct. 16, 1923.

UNITED. STATES PATENT" OFFICE.

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mas a 330mm COMPANY, OF ASHLAND, OHIO, A. CORPORATION OF OHIO.

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. I Application filed October 12, 1821. Serial No. 507,220.

To all whom it may concem Be it known that I, PHILIP ,A.'MYERS, a citizen of the United States, residing at Ashland, in the county of Ashland and State of Ohio, have invented certain new and useful Improvements in Power Heads for Operating Piston Rods of Pumps, of which the fol lowing is a specificatiom reference being had therein to the accompanying drawing.

.10 This invention relates to power headsfor operating the piston rods-of pumps, such as pumps that are used for drawing water from wells. n

The object that I have in view is the provision of a casing adapted to contain a quantity of lubricant combined with operating mechanism carried within the casing and including a rotary-reciprocating or oscillating member a part of which is within the casing and another part of which is outside of the casing, the part within being adapted for connection with the operatingmechanism and the part without for connection with the pitmen which actuate the pump rod, the arrangement being such that this member is oscillated by the operating mechanism within the casing and in turn reciprocates the pitmen. 1

In the accompanying drawings: Fig. 1 is a side elevation of a pump head and a partial elevation in sectional view of my improved powerhead;

ig. 2 is a perspective view, in detail, of the oscillating actuating member; I

' Fig. 2 is a similar view to Fig. 2 showing the arms separate from each other in stead of integral as in Fig. 2;

'Fig. 3 is a plan view with the cover of the casing removed and the upper rigging of the pump head omitted;

Fig. 4: is a plan view of the apparatus showing a modification in the oscillatingactuating member and. its relation to the casing; and,

Fig. 5' is a perspective view of such member in detail.

In the drawings, the numeral 1 designates a 'pumphead of any kind, such as a pump 7 headadapted to be mounted upon a pump 59 platform and'having aspout 2, a handle 3 flier operating the piston rod 4 and pitmen 5, one at either side, to actuate the pump rod when the handle is disconnected therefrom. These several features arecommon and in general use. It is to operate the piston rod interior of the casing.

withdrawal of thesha ft 10 and its pinion '15, with the pinion on the shaft, 9. bushing :22 in the nature of abearing. is used and and the pitmen that my invention is designed. It comprises a casing 6, preferably made of cast iron and forming within it a chamber: for holding a suitable lubricant and the operating mechanism; This mechanism consists of a shaft 7 having hearings in the side walls of the casing and carrying an eccentric 8 and a gear wheel 9. The eccentric and gear wheel are within the easing and are adapted to dip into the oil to effect their lubrication. A driving shaft 10 is also mounted in the casing and equipped with a pinion 11 which meshes with the gear wheel9 and with a pulley wheel 12 adapted to receive a belt operated by power, such as an electric motor or gasoline engine.

On the eccentric 8 is mounted an eccentric rod 13 which when the eccentric is rotated is given a generally reciprocating motion. This eccentric rod connects with my oscillating actuating member consisting of crank arms. 14 and 15 setat an angle to each other, preferably a right angle, forming an integral casting as indicated in Fig. 2 andmounted to oscillate on a shaft 16 having hearings in the walls of the casing. Or, as indicated in Fig. 2, the arms 14 and 15 may be of separate pieces'or castings and keyed to the shaft as shown at 16.

In either case when the eccentric rod is operated it 'williimpart a rotary reciprocating motion to the actuating member, the arm 14 of which is connected to .the eccentric rod as indicated at 17 while each arm 15 is connected to oneof the pitmen 5 as indicated at 18. The latter connection is offected through the studs 19 that project fromthe arms .15, as'will be clearly seen in Figs. 2 and 3. The casing is slotted as seen at 20 to permit of the arms 15 having free oscillating movement, while a removable cover 21 is provided for giving accessto the In order to permit of the insertion and removably secured to the casing by screws or bolts 23. The exterior diameter of this bushing is slightly in excess of that of the pinion so that the opening in the casing which is occupied by the bushing is large enough for the insertion and removal ft e pinion, as indicated by dotted lines'in Fig. 3.

Referring now to the mo ifi a ion ShQ E n9 are or portion of a circle, an

in Figure, it will be seen that the shaft 24, which otherwise corresponds with the shaft 16, is extended beyond and outside of the casing so that the arms 25 of the By reason of locating the arms 25 in the modified form, wholly outside of the casing, the casing need not be slotted as at 20 in the other form. This has the advantage of enabling me to use a greater quantity or depth of lubricant in the casing.

Referring now to the operation of my power head, it will be seen that when the eccentric is rotated by the caring and belt pulley it will reciprocate t e eccentric rod 13 which in turn will oscillate the actuat in member. This motion of the actuator wil reciprocate the pitmen and cause them to operate the pump rod 4 up and down.

It will also be noted that the travel of the actuating member is throu h a short that this limited movement avoids throwin the pitmen materially out of the straight line, with the result that they lift essentially in a I conceive myself to be the first to'pro-.

vide a rotary-reciprocating member in the nature of an actuator interposed between operating mechanism and pitmen adapted to operate a pump'rod, such actuatinglmember travelin through a short are and aving its arms pre erabl at an angle to each other.

Havin thus in ly described my invention, what I c aim as new and desire to secure by Letters Patent, is

1. In a power head, the combination with a casing and power mechanism mounted therein, of an oscillating actuator supported by the casing and having an arm within the casing connected to the operatin mechanism, and a pair of arms outside 0 the casing adapted for connection with pitmen.

2. In a power head, the combination with a casing and a pinion, a gearwheel, anv

eccentric, and an eccentric rod within the casing, of an oscillating actuator com rising a shaft mounted within and extende beyond the casing, an arm on the shaft within the casing connected with the eccentric rod and a pair of arms on the shaft outside of the casing and adapted for connection with pitmen.

In testimony whereof I afiix my signature.

PHILIP A. mines; 

